ZWO FF80 APO QUADRUPLET f/7.5 QHY10 The Dew Heater Ring features

The Dew Heater Ring features two storage clips to keep the power and thermistor jacks secure when not in use while accommodating the telescope's dust cover

The GM4000 can be supplied also in a special version for very low temperature operations: ask our team if interested

25" barrel Full-extension length 28mm SKU

The initial setup of the open-closed position of the panel need to be set up via Wander Empire software

2 arcsecond at sidereal velocity Tracking accuracy

ZWO FF80 APO QUADRUPLET f/7.5 QHY10 The Dew Heater Ring featuresThe ZWO FF80 is a professional apochromatic flatfield Petzval quadruplet with a focal ratio of f 7. 5 and an image circle of 44mm in diameter. The FF80 includes two Extra Low Dispersion glass elements for superb correction of chromatic aberration. The FF80 supports full frame cameras such as the ASI6200, with a central RMS radius of only 3 microns. Differently from standard ED refractors, the FF80 features a Petzval design that does not require to set